Sardines and anchovies are small pelagic fishes that support important commercial
fisheries around the world. This project reviews the inverse cyclic behavior in the
abundance of these two stocks, which is a striking f ...

The performances of newly-established gravel incubation systems designed to use unfiltered water for production of unfed salmon fry were evaluated at Netarts Bay, Oregon, and at Little Port Walter, Alaska.
Research was ...

Hatchery supplementation of anadromous salmon is extensive across the Pacific Northwest region with millions of juvenile salmon stocked annually. The influence of hatchery-origin fish as prey items in recipient ecosystem ...

Efforts to manage stocks of salmonids in Pacific Northwest stream systems are complicated by the occurrence of several runs of a species thought to represent races rearing sympatrically as juveniles. In order to collect ...

Range, areas of concentrated activity, and dispersal characteristics for juvenile Steller sea lions Eumetopias jubatus in the endangered western population (west of 144° W in the Gulf of Alaska) are poorly understood. Th ...

This paper lists, and gives individual accounts of, those Oregon mammals that at some time have been referred to as being of a status other than common. Although rare and endangered wildlife species were listed on a nati ...

Marine provinces, founded on contrasting floras or faunas, have been recognized for more than 150 years but were not consistently defined by endemism until 1974. At that time, provinces were based on at least a 10% endem ...

We used simulated magnetic displacements to test orientation preferences of
juvenile steelhead trout (Oncorhynchus mykiss) exposed to magnetic fields
existing at the northernmost and southernmost boundaries of their oc ...

The status of the double-crested cormorant (Phalacrocorax auritus) in western North
America was last evaluated during 1987–2003. In the interim, concern has grown over the potential
impact of predation by double-creste ...

I conducted a study to identify potential spawning habitat for anadromous salmonids above a 60-year-old hydropower dam in the headwaters of the North Umpqua River in Oregon. Like many other historical salmonid-bearing ri ...

To investigate the extent and causes of recent quaking aspen (Populus
tremuloides) recruitment in northern Yellowstone National Park, we measured browsing
intensity and height of young aspen in 87 randomly selected asp ...

Overfished species of rockfish, Sebastes spp., from the Northeast Pacific experience high bycatch mortality because of ‘barotrauma’, a condition induced from the rapid change in pressure during capture. Field experiments ...

Black rockfish (Sebastes melanops) is an important marine recreational
species throughout the Pacific Northwest. Recent catch data indicate a
trend of age-truncation in the black rockfish population off the Oregon
coa ...

Double-crested Cormorants (Phalacrocorax auritus) have used central New York waters for breeding and
stopover habitats during migration since 1984. In response to public concern over Oneida Lake, the United States
Depa ...

Understanding how individual characteristics are associated with survival is important to programs aimed at recovering
fish populations of conservation concern. To evaluate whether individual fish characteristics observ ...

Small remnants of 'natural' habitats exist today throughout much of the world. Upland
prairies in the Willamette Valley, Oregon have been nearly eliminated by conversion to
agriculture and other uses. As a result, very ...